Marriage and the family are not in fact a chance sociological construction, the product of particular historical and financial situations. On the other hand, the question of the right relationship between the man and the woman is rooted in the essential core of the human being and it is only by starting from here that its response can be found. In other words, it cannot be separated from the ancient but ever new human question: Who am I? What is a human being? And this question, in turn, cannot be separated from the question about God: Does God exist? Who is God? What is His face truly like? The Bible’s answer to these two questions unties them, and makes one a consequence of the other: the human being is created in the image of God, and God Himself is love. It is therefore the vocation to love that makes the human person an authentic image of God: Man and woman come to resemble God to the extent that they become loving people.
– Benedict XVI